Govee WiFi Hygrometer Thermometer Sensor 3 Pack, Indoor Wireless Smart Temperature Humidity Meter with Remote App Notification Alert, 2 Years Data Storage, Export, for Home, Greenhouse

These use a single AAA battery, and depending on the location of the hub and the AAA battery used, they last a long time!The setup was easy using the app, and I do have it connected to Govee's cloud so I can access the Hygrometer Thermometer information when out of the house. The hub found the devices without issue, and I was able to add them.I like the Bluetooth feature, as these can be used without a hub, though using a hub is better for the longevity of batteries and WiFi access. I wish the hub included with this pack could have more than 10 devices connected to it, as I'd like to place more Hygrometer Themometers than just 10 of them. Another downside to the hub is that it will ONLY work with HS100s.I have one HS100 outside, then others inside the house in the Kitchen, living room, dining room, Bedroom, and Server Room (aka Spare Bedroom). I have alerts set for temperature and humidity for the server room, as my servers and network gear care a bit more about both! And I occasionally get alerts for both.As for accuracy, the Dining Room HS100 temperature matches very closely to the Thermostat that is in the same room, even though the Thermostat only does full F degrees and not partial.As for battery life, I am using Panasonic Eneloop and EBL AAA batteries. I have noticed that the EBL AAAs drain faster than Eneloop AAAs, so they need to be replaced more often and recharged.I placed one of the HS100s in my fridge, and the battery did not last long, maybe a month if I was lucky. So get the Govee Hygrometer Thermometer that requires three batteries if you want these in a fridge or Freezer.These were my first Govee devices, but I have now bought some light bulbs. I have found that Govee devices I purchased are very good quality, and I will buy more Govee devices, including more HS100s.

The house is in the country and on a different electricity provider than our house is. Also, there is a poorly insulated (by me) pump house made of metal in which I put one of these. It's difficult to get the signal to it from the house through the metal and double sided foil lines flexible insulation, but I stuck an empty plastic bottle under the edge of the doorway to this janky structure and moved the sensor closer to the place where the bottle is and the connection has since remained stable. The pump house is maybe about 80 feet away from the router inside the house, so there is a lot of stuff for the signal to get through.I needed to be able to monitor when the temperatures dropped to near or below freezing inside the house and inside the pump house. These sensors have done the truck for me through a relatively long hard freeze here in Texas.So far, I've had to replace the batteries in 2 of the 6 sensors in 2 months and it looks like I'll be needing to change the rest of them soon. They seem to go from showing 2 bars of battery remaining to none as far as I can tell. The one I have in the garage (which was the first to need changing) is already looking like it will need changing again soonish. They're easy to change, but I really would like to get them on rechargeables once I've used up all of the batteries I currently have on hand.They seem relatively accurate compared to others weather stations inside and outside the house and compared to the officially reported temps. I calibrated them all in the same room before placing them in their final positions.Getting them connected to WiFi wasn't all that straightforward, and it took me a bit of time. Once I got one done the others were all easy though. Another reviewer here detailed something they did that made it work and I followed their lead. I can't remember what it was. I did not find the installation guidance of the app all that clear nor the app itself all that intuitive. There's a lot going on in that app that seems confusing and unnecessary to me, but that may be because they have so many devices available to buy and use on a hub - I'm not sure.At any rate, in spite of my hiccups with it, I'd recommend it. Just know you might hit snags with installation and search the reviews here for some tips. Also know you'll be going through batteries and put them in places easy to reach for ease of changing them out.For the price, being able to monitor the temps remotely in 6 different areas of my property and one at a relatively long distance away from the router, this set of sensors and hub is worth it to me. It provides me needed peace of mind regarding the temps and safety of pipes and expensive pump equipment by warning me via phone notification when things are outside of expected parameters.

muy bueno, hace lo que necesito

I really like these thermometer/hygrometers. They are quite precise, displaying temperature and humidity to the tenth. The historical data is fantastic as well, as it's easy to look at trends over hours, days, weeks, months, or the entire year. Although I've only had them for a couple months, so no long-term experience yet.Initially, I tried one in the RV freezer, one in the RF refrigerator, and one in the RV living room. Yes, there is an "RV" trend there. We are camping out in the RV while the house is remodeled. Anyway, we wanted to monitor the temps in the freezer and fridge zone to ensure they were cooling to the right levels. And they were. And yes, the signal worked right through the refrigerator doors. The base unit was placed about 15 feet away under the dinette (cause that's where the outlet is). :)As the season progressed and it got much colder, we were more concerned with the temperatures around the freshwater tank and the underbelly area. And we were right to be concerned. The freshwater tank or the feed from the tank to the pump froze when we had the cold snap in early December (Oregon). How do I know it was the tank or tank line to the pump? Well, our RV has a feed hose with a cutoff valve right before the pump. So, I filled a bucket of water, put the feeder hose in the bucket, and ran the pump. Pressured right up and the sinks worked. So, frozen tank or feed line.Anyway, we skirted the RV with cellular foam board, put a small space heater underneath with a thermal switch, and placed the thermostats. One thermostat was hung under the frame in the now enclosed underside of the RV. One in the pump area with all the crazy water lines. And one just outside the RV hanging from an external panel. The lanyards came in handy for that.We were happy to see the underbelly temps come slowly back up above freezing. At this moment (22 Dec 22), it's 36.9 degrees in the underbelly, and 10.4 degrees just on the outside of the RV. And yes, the water unfroze, and everything works again. Yay! We carefully checked for any leaks and were happy to not find any.So, we really like the sensors. They are connected over our home network, so I can check them anywhere, anytime. The Govee app is nice and easy to use, and it's easy to add the devices. I did get one bum battery that died in the first week, but that inconsequential. The others are running strong. And they work fine with our Eneloop rechargeables.Small, precise, and wireless. Good stuff.

wow, i have a lot of different weather and temp related products and i have to say this one was an easy to setup (not super easy but definitely doable with no experience) but the impressive thing is that it works beautifully and the app is excellent. hopefully the leak alarm notifications work at a distance but i did test them at close range and they worked fine. also, the AI and some info on the product page eluded to it not working with alexa but i tried it and it works well including with echo's and other alexa/amazon products.